英语词组on the alert是什么意思，短语翻译、用法及例句-英语词组固定搭配大全

词组	on the alert
释义	on the alertadj. phr.Alert; watchful; careful. 警惕的；密切注意的；小心的。◆ Campers must be on the alert for poison ivy and poison oak.野营者必须密切注意气根毒藤和栎叶毒漆树。
随便看	speed trap speed up spell out spell trouble spending money spending money or pocket money Spend the night spent rocket spick-and-span spill one's guts spill the beans spin a yam spine-chilling spinoff spin off spin one's wheels spin out spirit away spit spit or piss into the wedding cake spitting image spit up split hairs split second split the difference

英语词组固定搭配大全包含9718条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。